symmetrical combination of films
对称组合膜系

• diffraction spot
• diffraction X-ray tube
• diffractive optical elements
• diffractive spillover
• diffracto-gauge
• diffractogram
• diffractometer
• diffracton by plane screen
• diffused-base transistor
• diffused channel waveguide
• diffuse density
• diffused light
• diffused-meltback
• diffused rays
• diffuse filter
• diffuse illumination
• diffusely trasmitting
• diffuse maksing
• diffuse maximum
• diffuseness
• diffuser
• diffuse radiation
• diffuse reflectance
• diffuse-reflecting power
• diffuse reflection